Filling carrier for shuttleless looms



March 19, 1963 E. L. REMINGTON 3,031,795

FILLING CARRIER FOR SHUTTLELESS LOOMS Filed April 20. 1961 IN VEN TOR.ELuorT L REMINGTON.

r24 f/fww A TTORNE Y United States Patent 3,081,796 FILLING CARRIER FORSHUTTLELES LOOMS Elliott lL. Remington, Hopkinton, Mass, assignor toDraper Corporation, Hopedale, Mass, a corporation of Maine Filed Apr.29, 1961, Ser. No. 104,296 2 Claims. (Cl. 139122) This inventionpertains to improvements in a filling carrier for use in shuttlelesslooms, that is, in looms of a type in which the filling is supplied froma source outside of the shuttle or filling inserting means itself.

It is a general object of the invention to improve the operationalcharacteristics and wearing qualities of the filling receiving notchesof the filling carrier herein described.

It is a further object to provide a filling inserting carrier with wearresistant inserts in the throat portions of the filling receivingnotches to prevent excessive wearing away of material at these points.

It is a further object of the invention to provide novel sides to thefilling receiving notches whereby the filling when received by saidnotches is guided and caused to assume a central location on the wearresistant inserts as it is extended thereacross.

It is a further object to direct the filling yarn across the centralportion of the wear resistant inserts and away from the intersectingareas of said inserts and the sides of the filling receiving notches.

Further objects of the invention will become apparent from the followingmore detailed disclosure.

In so-called shuttleless looms whereby filling yarn is supplied from anoutside source and is not carried to and fro through the shed by ashuttle or carrier itself, it is common practice to insert each pick offilling by two reciprocating elements, one of which will hereinafter bereferred to as an inserter or inserting member and the other of whichreceives or has transferred to it that loop of filling yarn projectedinto the shed by the first member and which will hereinafter be referredto as a filling receiving or filling extending carrier.

These carriers are normally provided with filling receiving notchesthrough and across which the filling yarn is allowed to pass during theperiod of inserting the filling at one side of the shed and extending itto the opposite side. i

The inserting carrier includes both upper and lower filling receivingnotches into which the filling yarn is received and guided as thiscarrier is caused to enter the warp shed to meet and transfer a lengthof filling which will have been severed to a precise length into thereceiving notch of the extending carrier where it is then extendedthrough the remainder of the shed.

The present invention concerns itself primarily with the insertingcarrier and as this carrier is actuated in the same manner as similarcarriers of the prior art, it is considered sufficient at this pointmerely to call attention to certain patents which are illustrative ofthe type of loom concerned. Accordingly, reference is hereby made toUnited States Patents Nos. 2,586,638; 2,604,123; 2,705,508 and2,928,427.

Inserting carriers of the prior art are often subjected to veryundesirable conditions whereby they are caused to become excessivelyworn in those areas through and across which the filling yarn travels asit is in the process of being placed within the shed.

Excessive wearing of this nature renders these carriers unsatisfactoryfor further use in a period of time far less than the normal lifeexpectancy of such carriers. This wearing condition is attributed to theabrasiveness of certain types of filling yarns; while soft and low twistyarns have little or no effect on these carriers, hard and 3,'fi81,796Patented Mar. 19, 1963 high twist yarns as well as certain syntheticspossess very abrasive characteristics detrimental to the aforementionedsurfaces of the carriers over which the filling yarn is caused totravel.

According to the novel characteristics of the instant invention thisundesirable condition can be eliminated by means of wear resistantinsert pins positioned within the throat portions of the fillingreceiving notches and the guiding and camrning means by which thefilling is caused to assume a centralized position on the insert pinsafter being received by said notches. As this carrier projects inwardlyto transfer a loop of filling to the extending carrier, the filling yarnis caused to move over and across the central portion of these pins freefrom interference that could become detrimental to either the fillingyarn or carrier itself.

The invention will be described hereinafter in greater detail byreference to the accompanying figures of drawing, in which:

FIG. 1 is a plan view showing the operating end of the filling insertingcarrier with the novel characteristics of the present invention appliedthereto;

FIG. 2 is a side elevation of the carrier shown in FIG. 1;

FIG. 3 is a sectional view looking in the direction of the arrows online 3-3 of FIG. 1;

FIG. 4 is a sectional view looking in the direction of the arrows online 4-4 of FIG. 1.

Now referring to the figures of drawing the inserting carrier with whichthe present invention is concerned is formed as a functionally integralmember at the free end of a flexible reciprocating member or tape 10.This tape is utilized to reciprocate the thread carrying member itselfwhich is caused to enter the shed formed by warp threads and to bewithdrawn therefrom}. The general structure of this inserting carrier isformed substantially the same as the inserting carrier disclosed inUnited States Patent No. 2,928,427 and it is considered sutficient todescribed and set forth more fully that portion of the carrier to whichthe present invention relates. It includm the conventional box-likestructure generally indicated by numeral 11 which comprises a top planarportion 12 having a filling receiving notch 13 that cooperates with anoifset filling receiving notch 14 included in a lower or bottom surface15 of this structure.

This bottom surface 15 is partially cut away to an extent defined by theparallel sides 16 which provide therein a recess or cut-out portion forentry of the cooperating portion of a filling extending carrier (notshown). Sides 1'7 and 18 of this box-like structure are provided withinwardly directed holes 19 and 20 formed at right angles to said sides.Holes 19 and 20 pass through and beyond the inner side walls of thefilling receiving notches 13 and 14 and are adapted to receive wearresistant insert pins 21 and 22. therein. Insertion of these pins thenforms the throat portions of the filling receiving notches 13 and 14-through and across which the filling yarn is caused to travel during itsinsertion into the shed. The filling yarn when received by notches .13and 14 is caused to be crammed and guided to those surfaces of pins 21and 22 which form the throat portions of said, notches and is alsocaused to be drawn over the central part of these surfaces and away fromthe intersecting areas of the pins where they pass through the sides ofsaid notches.

The sides of the filling receiving notches 13 and 14 are formed in sucha manner, as at 23 and 24- respectively, that the filling yarn whenentering said notches and at the angle created by the offsetrelationship of these notches, is caused to be cammed and guided by theformed sides and then in a positive manner is centrally positioned inthe throat portions of the notches.

In operation, the filling yarn moving over the wear resistant insertpins has corrected the undesirable condition which frequently prevailsin carriers of the prior art Where excessive wearing away of material inthe throat portions of such carriers is experienced. Although soft andlow twist yarns have little or no effect on the filling carriers, hardand high twist yarns as Well as certain synthetic yarns have proven tohave very abrasive qualities that contribute considerably to prematurelyplacing such carriers in a condition whereby their replacement isrequired.

The wear resistant insert pins herein described are produced :Erornmaterials of far greater hardness than the carriers themselves. Manysuch materials which possess qualities of wear resistant nature may beutilized such, for example, as AlSiMag, Heaniurn, chromalloy steel ornitrided steel.

While one embodiment of the invention has been disclosed, it is to beunderstood that the inventive concept may be carried out in a number ofways. This invention is, therefore, not to be limited to the precisedetails de scribed, but is intended to embrace all variations andmodifications thereof falling within the spirit of the invention and thescope of the claims.

I claim:

1. For a loom having reciprocable carriers by which filling from anoutside source of supply is inserted within sheds formed by warpthreads, at filling inserting carrier having a pair of filling receivingnotches, wear resistant inserts forming the throat portions of saidnotches, the sides of said filling receiving notches being formed so asto earn and guide said filling when received by said notches away fromthe intersecting areas of said wear resistant inserts in said notches.

2. For a loom having reciprocable carriers by which filling from anoutside source of supply in inserted within sheds formed by warpthreads, a filling inserting carrier having a pair of filling receivingnotches extending inwardly from the leading end of said carrier andterminating in the form of a semi-circular groove, wear resistant insertpins intersecting and extending beyond said grooves and forming thethroat portion of said notches, the sides of said notches being formedso as to earn and guide said filling received therein in a centrallydisposed position 1 within said groove as it is drawn thereacross andaway from saidintersecting areas of said wear resistant pins and saidgrooves.

References Cited in the file of this patent UNITED STATES PATENTS449,336 Skinner et al Mar. 31, 1891 2,336,937 Kaufmann Dec. 14, 19432,586,638 Flamand Feb. 19, 1952

1. FOR A LOOM HAVING RECIPROCABLE CARRIERS BY WHICH FILLING FROM ANOUTSIDE SOURCE OF SUPPLY IS INSERTED WITHIN SHEDS FORMED BY WARPTHREADS, A FILLING INSERTING CARRIER HAVING A PAIR OF FILLING RECEIVINGNOTCHES, WEAR RESISTANT INSERTS FORMING THE THROAT PORTIONS OF SAIDNOTCHES, THE SIDES OF SAID FILLING RECEIVING NOTCHES BEING FORMED SO AS